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When writing a MIDX, 'git repack' takes a snapshot of the repository's references and writes the result out to a file, which it then passes to 'git multi-pack-index write' via the '--refs-snapshot'. This is done in order to make bitmap selections with respect to what we are packing, thus avoiding a race where an incoming reference update causes us to try and write a bitmap for a commit not present in the MIDX. Extract this functionality out into a new repack-midx.c compilation unit, and expose the necessary functions via the repack.h API. Signed-off-by: Taylor Blau <me@ttaylorr.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
106 lines
3.2 KiB
C
106 lines
3.2 KiB
C
#ifndef REPACK_H
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#define REPACK_H
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#include "list-objects-filter-options.h"
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#include "string-list.h"
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struct pack_objects_args {
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char *window;
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char *window_memory;
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char *depth;
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char *threads;
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unsigned long max_pack_size;
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int no_reuse_delta;
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int no_reuse_object;
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int quiet;
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int local;
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int name_hash_version;
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int path_walk;
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int delta_base_offset;
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struct list_objects_filter_options filter_options;
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};
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#define PACK_OBJECTS_ARGS_INIT { .delta_base_offset = 1 }
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struct child_process;
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void prepare_pack_objects(struct child_process *cmd,
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const struct pack_objects_args *args,
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const char *out);
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void pack_objects_args_release(struct pack_objects_args *args);
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void repack_remove_redundant_pack(struct repository *repo, const char *dir_name,
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const char *base_name);
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struct repository;
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struct packed_git;
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struct existing_packs {
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struct repository *repo;
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struct string_list kept_packs;
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struct string_list non_kept_packs;
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struct string_list cruft_packs;
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};
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#define EXISTING_PACKS_INIT { \
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.kept_packs = STRING_LIST_INIT_DUP, \
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.non_kept_packs = STRING_LIST_INIT_DUP, \
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.cruft_packs = STRING_LIST_INIT_DUP, \
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}
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/*
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* Adds all packs hex strings (pack-$HASH) to either packs->non_kept
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* or packs->kept based on whether each pack has a corresponding
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* .keep file or not. Packs without a .keep file are not to be kept
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* if we are going to pack everything into one file.
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*/
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void existing_packs_collect(struct existing_packs *existing,
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const struct string_list *extra_keep);
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int existing_packs_has_non_kept(const struct existing_packs *existing);
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int existing_pack_is_marked_for_deletion(struct string_list_item *item);
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void existing_packs_retain_cruft(struct existing_packs *existing,
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struct packed_git *cruft);
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void existing_packs_mark_for_deletion(struct existing_packs *existing,
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struct string_list *names);
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void existing_packs_remove_redundant(struct existing_packs *existing,
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const char *packdir);
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void existing_packs_release(struct existing_packs *existing);
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struct generated_pack;
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struct generated_pack *generated_pack_populate(const char *name,
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const char *packtmp);
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int generated_pack_has_ext(const struct generated_pack *pack, const char *ext);
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void generated_pack_install(struct generated_pack *pack, const char *name,
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const char *packdir, const char *packtmp);
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void repack_promisor_objects(struct repository *repo,
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const struct pack_objects_args *args,
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struct string_list *names, const char *packtmp);
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struct pack_geometry {
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struct packed_git **pack;
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uint32_t pack_nr, pack_alloc;
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uint32_t split;
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int split_factor;
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};
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void pack_geometry_init(struct pack_geometry *geometry,
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struct existing_packs *existing,
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const struct pack_objects_args *args,
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int pack_kept_objects);
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void pack_geometry_split(struct pack_geometry *geometry);
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struct packed_git *pack_geometry_preferred_pack(struct pack_geometry *geometry);
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void pack_geometry_remove_redundant(struct pack_geometry *geometry,
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struct string_list *names,
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struct existing_packs *existing,
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const char *packdir);
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void pack_geometry_release(struct pack_geometry *geometry);
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struct tempfile;
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void midx_snapshot_refs(struct repository *repo, struct tempfile *f);
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#endif /* REPACK_H */
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